I understand your situation but I do not agree. If we are allowed to make transactions we should also be allowed to value that transaction.
The lack of education of some people is another matter, and I think that the moderators are here for this, among other things, to put those people in their place.
-- ferranadsr

That's exactly the problem here.
As soon as you have had contact with someone, they can vote for you without having bought or sold anything!